TITLE:
Review of Studies on the Last Enzymes in Bacteriochlorophyll (Bchl) and Chlorophyll (Chl) Biosynthesis
AUTHORS:
Silvio M. D. Nascimento, Yuanyuan Zou, Qi Cheng
KEYWORDS:
Photosynthesis Chlorophyll, Bacteriochlorophyll Biosynthesis, Enzymes DVR, DPOR, LPOR and COR
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.7 No.12,
August
24,
2016
ABSTRACT: This paper summarizes the
information available online related to mechanisms of Chlorophyll and Bacteriochlorophyll
biosynthesis, emphasizing four enzymes in its last steps. The biosynthesis of Chlorophyll
(Chl)/Bacteriochlorophyll (Bchl) is essential for the occurrence of
photosynthesis. Four enzymes catalyze parts of the last chemical reactions steps
to biosynthesize Bchl/Chl; they are: The Light-Dependent Protochlorophyllide
(Pchlide) Oxidoreductase (LPOR: EC 1.3.1.33), the Light-Independent Pchlide oxidoreductase (DPOR: EC 1.3.7.7), Chlide Reductase (COR: EC
1.3.99.35) and the Divinyl Reductase (DVR:
EC 1.3.1.75). These enzymes catalyze the reductions reactions of tetrapyrrole’s
rings in the Chlorophyll and Bacteriochlorophyll biosynthesis process. This review
has the aim to organize, analyze and compare the most important discoveries related
to these four enzymes discovered so far. The comparisons are made with the information
from the bibliography used, and the sequence of these enzymes got from online database.
Sequence alignment, phylogenetic and molecular evolutionary analysis of all the
four enzymes was conducted to find their levels of similarities.